Update EUvsVirus/Overlays_Updated_Vid/ER_stress_text_mining_drugs.txt,...

Update EUvsVirus/Overlays_Updated_Vid/ER_stress_text_mining_drugs.txt, EUvsVirus/Overlays_Updated_Vid/Overlay_ER_Stress_Downregulated.txt, EUvsVirus/Overlays_Updated_Vid/Overlay_ER_Stress_Upregulated.txt files Deleted ER_stress_text_mining_drugs.txt, Overlay_ER_Stress_Upregulated.txt, Overlay_ER_Stress_Downregulated.txt files